package com.shuang.tree11;

public class TreeNode {

    int val;

    TreeNode left;

    TreeNode right;

    public TreeNode(){}

    public TreeNode(int val){
        this.val = val;
    }

    public TreeNode(int val, TreeNode left, TreeNode right){
        this.val = val;
        this.left = left;
        this.right = right;
    }

}
